Vulnerability in Kernel: net: systemport: Add global locking for descriptor lifecycle
Summary
GSD-2021-1002614: net: systemport: Add global locking for descriptor lifecycle. Affects Kernel versions >= 80105befdb4b8cea924711b40b2462b87df65b62, < 8ed2f5d08d6e59f8c78b2869bfb95d0be32c094c. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. The net subsystem within the Kernel handles network-related operations, including network protocols, socket management, and data transmission. One specific component of the net subsystem is the systemport, which manages the lifecycle of descriptors used for network communication.
Vulnerability Detail
The net: systemport component in the Kernel lacks global locking for the descriptor lifecycle. This vulnerability was introduced in version v3.16 of the Kernel by commit 80105befdb4b8cea924711b40b2462b87df65b62 and is fixed in version v4.4.296 by commit 8ed2f5d08d6e59f8c78b2869bfb95d0be32c094c. Without proper global locking, concurrent operations on descriptors can lead to race conditions and potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability is fixed in the latest version of the Linux Kernel, there is no specific workaround available. It is recommended to update the Kernel to address the issue.
Conclusion
The net: systemport component in the Kernel is vulnerable to race conditions and potential security vulnerabilities due to the lack of global locking for the descriptor lifecycle. It is crucial to update the Linux Kernel to version v4.4.296 or later to address this issue. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the actual attack plausibility has not been proven. However, without proper global locking, concurrent operations on descriptors can potentially lead to race conditions and security vulnerabilities.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation. Simply upload your manifest file (e.g., package-lock.json) to the playground and it will provide information on any vulnerabilities detected.
Yes, a patch for this vulnerability is available in the Linux Kernel version v4.4.296 or later. Updating the Kernel to this version will address the issue by adding global locking for the descriptor lifecycle in the net: systemport component.
There are currently no known exploits for this vulnerability. However, it is still important to update the Linux Kernel to the latest version to mitigate any potential risks.
You can find more information about this vulnerability in the GSD-2021-1002614 JSON report available on the Cloud Security Alliance's GitHub repository (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002614.json).
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